It sounds too extreme to me. Sure, it’s having an effect, but that’s not necessarily coming from the extreme nature. You may get just as good an effect (or better) if you went along fasted until you started to get hungry, ate something, and then finished the workout at a higher-than-otherwise speed (because you’ll have CHO on board).
Hitting the Wall during fasted training
So for my weekend long session I’ve this summer put in some long days in a ski hill, doing from 1995m to 2565m of elevation gain. I always do it fasted, and takes me between 6 to 7 hours before I have to stop. It’s all done in nose-breathing or conversational tempo.
Usually the last “lap” (285m vertical to the top, 1.3 km horisontal), I’m reeeally hitting the wall. Full on heart beating harder than normal, shaking hands, hard to control my legs, hard to think and sometimes trouble speaking correctly due to loss of concentration, cold sweats, talking to Jesus, all that stuff. Basically what I tend to call “zombie death march mode” when I’m mountaineering. When it gets to that point I’m done, and go home to eat.
Over the summer the point this hits me has gotten further and further delayed. Today I stopped more because I ran out of time than actually hitting the wall (although as always I was very hungry and generally out of it, but only slightly). Today I was expecting to hit the wall at the last 4 laps, but my fatigue just slowly developed rather than suddenly putting me out of service.
Obviously it is having some effect, but I was wondering if this is a good way to go about things. Considering during the weekend I’m basically just trying to go as far as I can until I physically can’t go any further, and it seems a bit more extreme than others do to just attempt to hit the wall as hard as I can. However, it does seem to be changing something.
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